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[PATCH v2 0/2] hyper-v: avoid tsc calibration

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  [PATCH v2 0/2] hyper-v: avoid tsc calibration Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-06-22 12:10 +0200

#1672492 — [PATCH v2 0/2] hyper-v: avoid tsc calibration

Changes since v1:
- s/AVAILABELE/AVAILABLE/ fixing the typo [Thomas Gleixner]

Original description:

TSC calibration on virtual machines is always error prone. It was found
that in nested environments Gen2 instances may get stuck on boot. As
Hyper-V hosts provide us with all the required information we can easily
avoid calibration. This is already done for other hypervisors (KVM,
Vmware).

Vitaly Kuznetsov (2):
  hyper-v: check frequency MSRs presence according to the specification
  hyper-v: read TSC frequency from a synthetic MSR

 arch/x86/include/uapi/asm/hyperv.h | 15 ++++++---------
 arch/x86/kernel/cpu/mshyperv.c     | 18 +++++++++++++++++-
 2 files changed, 23 insertions(+), 10 deletions(-)

-- 
2.9.4

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